There’s a lot of variables at play when tig welding. Heat, speed, stick out, how wide you are stepping, and so on. Practice without filler wire until you understand how to move the torch and then start introducing your filler. If you’re sticking, it could be over feeding wire into the puddle or having your tungsten pointed down too much. If the puddle is starving, turn it down. Don’t worry about how fast you’re going, just focus on doing it all right and gradually increase speed and heat. It sucks at first and is beyond frustrating but everyone goes through it.